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Biology Chapter 1
Vocabulary for Chapter 1.1 in Bio
Term | Definition |
---|---|
biosphere | All living things and all the places they are found on Earth |
biodiversity | The variety of organisms in a given area |
species | a group of organisms that are closely related and can produce fertile offsprings |
biology | the scientific study of living things and their interactions with their environment |
science | the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles than can be verified or tested |
organism | any individual living thing |
cell | the basic unit of life |
metabolism | all of the chemical processes that build up or break down materials |
DNA | the genetic material that contains the information that determines inherited characteristics in a molecule |
system | an organized group of related parts that interact to form a whole |
ecosystem | a community of organisms and their physical environment |
homeostasis | the maintenance of constant internal conditions in an organism |
evolution vai | the change in living things over time |
adaptation | an inherited trait that gives advantage to individuals organisms and is passed on to future generations |
observation | using our senses to study the world |
data | observations are often recorded as ______ that can be analzed |
hypothesis | a proposed answer for a scientific question |
experiments | allow scientists to test hypotheses and find out how something happens |
independent variable | the ______________ in an experiment is a condition that is manipulated, or changed, by a scientist |
dependent variables | ______________ are observed and measured during an experiment; they are experimental data |
constants | the conditions that do not change during an experiment |
theory | a proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence |
measurement | the determination of the dimensions of something using a standard unit |
accuracy | a description of how close a measurement is to the true value of the quantity measured |
precision | the exactness of a measurement |
microscope | provides an enlarged image of an object |
gene | a segment of DNA that stores genetic information |
molecular genetics | the study and manipulation of DNA on a molecular level |
genomics | the study and comparison of genomes both within and across species |
biotechnology | the use and application of living things and biological processes |
transgenic | organisms that have genes from more than one species, or have altered copies of their own genes |